<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>圣杯布局</title>
  <style type="text/css">
  body {
    min-width: 550px;
  }

  #header {
    text-align: center;
    background-color: #f1f1f1;
  }

  #container {
    padding-left: 200px;
    padding-right: 150px;
  }

  #container .column {
    float: left;
  }

  #center {
    background-color: #ccc;
    width: 100%;
  }

  #left {
    position: relative; /* 相对于自身移动 下面的right 200px */
    background-color: yellow;
    width: 200px;
    margin-left: -100%; /* 往左拖动100% */
    right: 200px;
  }

  #right {
    background-color: red;
    width: 150px;
    margin-right: -150px; /* 可以看成自身的宽度减少150px */
  }

  #footer {
    /*clear: both;*/
    text-align: center;
    background-color: #f1f1f1;
  }

  /* 手写 clearfix */
  .clearfix:after {
    content: '';
    display: table;
    clear: both;
  }
  </style>
</head>

<body>
<div id="header">this is header</div>
<div id="container" class="clearfix">
  <div id="center" class="column">this is center</div>
  <div id="left" class="column">this is left</div>
  <div id="right" class="column">this is right</div>
</div>
<div id="footer">this is footer</div>
</body>

</html>
